CN110552307A - Dust collection device for building construction and working method thereof - Google Patents
Dust collection device for building construction and working method thereof Download PDFInfo
- Publication number
- CN110552307A CN110552307A CN201910852706.3A CN201910852706A CN110552307A CN 110552307 A CN110552307 A CN 110552307A CN 201910852706 A CN201910852706 A CN 201910852706A CN 110552307 A CN110552307 A CN 110552307A
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- Prior art keywords
- dust
- gear
- water
- fixed mounting
- dust collection
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
- E01H1/0836—Apparatus dislodging all of the dirt by suction ; Suction nozzles
- E01H1/0845—Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H3/00—Applying liquids to roads or like surfaces, e.g. for dust control; Stationary flushing devices
- E01H3/02—Mobile apparatus, e.g. watering-vehicles
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a dust suction device for building construction and a working method thereof, and relates to the field of buildings. This dust extraction for construction, including base, U-shaped dust collection box and take out the pole, the top external surface fixation of base has box, mount and driving motor, the bottom surface rotation of base installs the walking wheel, fixed mounting has first gear on driving motor's the output shaft, two sets of slide rails have been seted up at the top of mount, the inboard top of mount is rotated and is installed first dwang and second dwang, the one end of first dwang extends to the below and the fixed mounting of base and has first rotatory clearance brush, the one end of second dwang extends to the below and the fixed mounting of base and has the rotatory clearance brush of second, the outer wall fixed mounting of first dwang has the second gear. The invention enlarges the cleaning range and the dust collection range, thereby improving the dust removal effect.
Description
Technical Field
The invention relates to the field of buildings, in particular to a dust suction device for building construction and a working method thereof.
Background
The dust pollution in construction engineering construction refers to the pollution to the atmosphere caused by dust particles generated in the production activities of building construction, road and pipeline construction, house dismantling, material transportation, material stacking, road cleaning, mud land exposure and the like. The dust pollution can bring serious influence to places with large living amount of people around residential areas and the like. In order to prevent the pollution of the flying dust and protect and improve the quality of the atmospheric environment, effective measures are needed to be taken so as to reduce and control the adverse effect of the flying dust generated in construction on the environment to the maximum extent.
At present, in a dustproof mode of a construction site, water spraying and dust raising are uniformly used regardless of the amount of dust, but the dust sprayed with water is not easy to treat, and workers clean the dust.
Disclosure of Invention
The invention aims to provide a dust suction device for building construction and a working method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a dust collection device for building construction comprises a base, a U-shaped dust collection box and a drawing rod, wherein a box body, a fixing frame and a driving motor are fixed on the outer surface of the top of the base, a walking wheel is installed on the outer surface of the bottom of the base in a rotating mode, a first gear is fixedly installed on an output shaft of the driving motor, two sets of sliding rails are arranged at the top of the fixing frame, a first rotating rod and a second rotating rod are installed on the top of the inner side of the fixing frame in a rotating mode, one end of the first rotating rod extends to the lower portion of the base and is fixedly provided with a first rotating cleaning brush, one end of the second rotating rod extends to the lower portion of the base and is fixedly provided with a second rotating cleaning brush, a second gear is fixedly installed on the outer wall of the first rotating rod, a third gear is fixedly installed on the outer wall of the second rotating rod, a chain is sleeved on, the outer fixed surface of one side of box installs the first fixed plate, the inside fixed mounting of box has the fixed plate, the inboard bottom fixed mounting of box has the air exhauster, the bottom outer fixed surface of air exhauster installs dust absorption pipe and extends to the below of base, the air exhauster communicates with each other with the inside of dust absorption pipe, the play dirt end fixed mounting of air exhauster has a dirt pipe, the bottom of U-shaped dust collection case is rotated and is installed the gyro wheel, the gyro wheel slides and sets up in the slide rail, the top outer fixed surface of fixed plate installs the water tank, one side outer fixed surface of water tank installs the inlet tube and the inlet tube communicates with each other with the inside of water tank, the inboard bottom fixed mounting of water tank has the water pump, the play water end fixed mounting of water pump has the outlet pipe, the outlet pipe runs through water tank, the outlet pipe communicates with each other with sheathed tube inside, sheathed tube one end fixed mounting has gondola water faucet ware and sheathed tube inside communicates with each other.
Preferably, the quantity of walking wheel and gyro wheel is four groups and is the rectangle distribution, it has the buckle to articulate on the walking wheel.
Preferably, the middle part of the top of the fixing frame is provided with a groove, and one end of the pumping rod penetrates through the first fixing plate and the U-shaped dust collecting box to be clamped and mounted with the groove in the fixing frame.
Preferably, an opening is formed in the outer surface of one side of the U-shaped dust collection box, the diameter of the opening is larger than that of the dust outlet pipe, the dust outlet pipe penetrates through the box body and is movably sleeved with the opening in the U-shaped dust collection box, and the dust outlet pipe is communicated with the inside of the U-shaped dust collection box.
Preferably, the outer surface of one side of the box body is fixedly provided with a handrail, and one side of the box body, which is far away from the shower device, is fixedly provided with two groups of handles.
Preferably, the outer wall of the front end of the U-shaped dust collecting box is embedded with a glass window, and the outer wall of the front end of the U-shaped dust collecting box is also fixedly provided with a handle.
Preferably, a knob cover is installed at one end of the water inlet pipe in a threaded mode, and a valve is installed on the sleeve.
Preferably, driving motor, first gear, second gear, third gear and chain cooperation are used, drive first dwang, second dwang and rotate to drive the rotation of first rotatory cleaning brush and the rotatory cleaning brush of second, dust absorption pipe, air exhauster, play dirt pipe and the cooperation of U-shaped dust collection box are used, water tank, water pump and gondola water faucet ware cooperation are used, handrail, handle and walking wheel cooperation are used.
Preferably, the knob cover can be disassembled and assembled through a rotatable knob, water enters the water tank through the water inlet pipe after the disassembly, and the water inlet pipe is closed after the assembly.
The working method of the dust suction device for building construction comprises the following steps: the device is pushed to the place needing dust removal by holding the handrail by hand, the knob cover on the water inlet pipe is unscrewed, water is injected into the water tank, after a certain amount of water is filled, the knob cover on the water inlet pipe is screwed, the driving motor and the exhaust fan are controlled to be started, the first gear is driven to rotate, the first rotating rod and the second rotating rod on the second gear and the third gear are driven to rotate, the first rotary cleaning brush and the second rotary cleaning brush are driven to rotate, the dust on the ground is cleaned and accumulated, meanwhile, the dust collecting pipe cleans the accumulated dust on the construction site and discharges the dust into the U-shaped dust collecting box through the dust discharging pipe, the valve on the water discharging pipe is opened, the water pump is controlled to be started, water flows out of the water discharging pipe, enters the shower and is sprayed out through the shower, the ground after dust collection is sprayed, the device is pulled to each place needing dust removal by holding the handle by hand, and after dust removal, The blower and pump stop running.
Compared with the prior art, the invention has the beneficial effects that:
The cleaning and dust collecting device drives the first rotating rod and the second rotating rod to rotate through the matched use of the driving motor, the first gear, the second gear, the third gear and the chain, so that the first rotary cleaning brush and the second rotary cleaning brush rotate to clean dust in a construction site, the dust collected in the construction site is sucked into the U-shaped dust collecting box through the matched use of the dust collecting pipe, the exhaust fan, the dust outlet pipe and the U-shaped dust collecting box, the collected dust is convenient to collect, the cleaning and dust collecting range can be enlarged through the matched use of the handrail, the handle and the travelling wheels, the practicability of the cleaning and dust collecting device is enhanced, the ground after cleaning and dust collection is sprayed through the matched use of the water tank, the water pump and the sprayer, and the dust collecting effect is further improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
fig. 2 is a schematic view of the left side structure of the present invention.
Fig. 3 is a front view of the present invention.
In the figure: the dust collector comprises a base 1, a box body 2, a fixed frame 3, a fixed plate 4, a driving motor 5, a first gear 6, a second gear 7, a third gear 8, a chain 9, a first rotating rod 10, a second rotating rod 11, a first rotating cleaning brush 12, a second rotating cleaning brush 13, a dust suction pipe 14, a suction fan 15, a dust discharge pipe 16, a first fixed plate 17, a U-shaped dust collection box 18, a suction rod 19, a water tank 20, a water pump 21, a water inlet pipe 22, a water outlet pipe 23, a sleeve 24, a shower sprayer 25, a travelling wheel 26, a handle 27, a handrail 28, a roller 29 and a sliding rail 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a dust collection device for building construction comprises a base 1, a U-shaped dust collection box 18 and a pumping rod 19, wherein the U-shaped dust collection box 18 collects dust, a box body 2, a fixing frame 3 and a driving motor 5 are fixed on the outer surface of the top of the base 1, the driving motor 5 provides power, a traveling wheel 26 is rotatably installed on the outer surface of the bottom of the base 1, the device is convenient to move, a first gear 6 is fixedly installed on an output shaft of the driving motor 5, two groups of sliding rails 30 are arranged on the top of the fixing frame 3, a first rotating rod 10 and a second rotating rod 11 are rotatably installed on the top of the inner side of the fixing frame 3, one end of the first rotating rod 10 extends to the lower side of the base 1 and is fixedly provided with a first rotary cleaning brush 12, one end of the second rotating rod 11 extends to the lower side of the base 1 and is fixedly provided with a second rotary cleaning brush 13, a second gear 7, a third gear 8 is fixedly arranged on the outer wall of the second rotating rod 11, a chain 9 is sleeved on each of the first gear 6, the second gear 7 and the third gear 8, the first rotating rod 10 and the second rotating rod 11 are driven to rotate by matching of a driving motor 5, the first gear 6, the second gear 7, the third gear 8 and the chain 9, so that the first rotating cleaning brush 12 and the second rotating cleaning brush 13 rotate to clean dust in a construction site, a first fixing plate 17 is fixedly arranged on the outer surface of one side of the box body 2, a fixing plate 4 is fixedly arranged in the box body 2, an exhaust fan 15 is fixedly arranged at the bottom of the inner side of the box body 2, a dust suction pipe 14 is fixedly arranged on the outer surface of the bottom of the exhaust fan 15, the dust suction pipe 14 extends to the lower part of the base 1, the exhaust fan 15 is communicated with the inside of the dust suction pipe 14, and a dust outlet pipe 16 is fixedly arranged at the dust, the bottom of the U-shaped dust collecting box 18 is rotatably provided with a roller 29, the roller 29 is arranged in a sliding rail 30 in a sliding way, dust cleaned and accumulated in a construction site is sucked into the U-shaped dust collecting box 18 through the matching use of the dust collecting pipe 14, the exhaust fan 15, the dust outlet pipe 16 and the U-shaped dust collecting box 18 so as to be convenient for collecting the dust, the outer surface of the top of the fixing plate 4 is fixedly provided with a water tank 20, the outer surface of one side of the water tank 20 is fixedly provided with a water inlet pipe 22, the water inlet pipe 22 is communicated with the inside of the water tank 20, the bottom of the inner side of the water tank 20 is fixedly provided with a water pump 21, the water outlet end of the water pump 21 is fixedly provided with a water outlet pipe 23, the water outlet pipe 23 penetrates through the water tank 20 and the box body 2 to be fixedly connected with the outer surface of one side of the sleeve 24, the water outlet pipe 23, the dust-collecting device sprays the ground after cleaning and dust collection, and further improves the dust-collecting effect.
The walking wheels 26 and the rollers 29 are four groups and are distributed in a rectangular shape, the walking wheels 26 are hinged with buckles which control the movement and fixation of the walking wheels 26, the middle part of the top of the fixed frame 3 is provided with a groove, one end of the pumping rod 19 penetrates through the first fixed plate 17 and the U-shaped dust collecting box 18 and is clamped and installed with the groove on the fixed frame 3, the outer surface of one side of the U-shaped dust collecting box 18 is provided with an opening, the opening diameter is larger than the diameter of the dust outlet pipe 16, the dust outlet pipe 16 penetrates through the box body 2 and is movably sleeved with the opening on the U-shaped dust collecting box 18, the dust outlet pipe 16 is communicated with the inside of the U-shaped dust collecting box 18, the outer surface of one side of the box body 2 is fixedly provided with a handrail 28, one side of the box body 2, which is far away from the shower 25, is fixedly provided with two groups of handles 27, the cleaning and dust collection range can be enlarged and the practicability, when the dust accumulation condition of the U-shaped dust collection box 18 is observed through the glass window, when the dust in the U-shaped dust collection box 18 is too much, the drawing rod 19 is drawn out, the U-shaped dust collection box 18 is taken out, the dust in the U-shaped dust collection box 18 is convenient to clean, a handle is further fixedly mounted on the outer wall of the front end of the U-shaped dust collection box 18, a knob cover is mounted on one end of a water inlet pipe 22 in a threaded mode, the knob cover can be disassembled and assembled in a rotating mode, water enters the water tank 20 through the water inlet pipe 22 after being disassembled, the water inlet pipe 22 is closed after being installed, and a valve is mounted on.
The working method of the invention comprises the steps of holding the handrail 28 by hand to push the device to a place needing dust removal, unscrewing the knob cover on the water inlet pipe 22, injecting water into the water tank 20, filling a certain amount of water, screwing the knob cover on the water inlet pipe 22, controlling the driving motor 5 and the exhaust fan 15 to start, driving the first gear 6 to rotate, driving the first rotating rod 10 and the second rotating rod 11 on the second gear 7 and the third gear 8 to rotate, driving the first rotary cleaning brush 12 and the second rotary cleaning brush 13 to rotate, cleaning and accumulating dust on the ground, simultaneously, discharging the dust cleaned and accumulated on a construction site into the U-shaped dust collection tank 18 through the dust outlet pipe 16 by the dust suction pipe 14, opening the valve on the water outlet pipe 23, controlling the water pump 21 to start, enabling water to flow out from the water outlet pipe 23, enter the shower 25 and be sprayed out through the shower 25, and spraying the cleaned and sucked ground, the handle 27 is held by hand to pull the device to various places needing dust removal, and after the dust removal is finished, the driving motor 5, the exhaust fan 15 and the water pump 21 are controlled to stop running.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a dust extraction for construction, includes base (1), U-shaped dust collection box (18) and takes out pole (19), its characterized in that: the outer fixed surface in top of base (1) has box (2), mount (3) and driving motor (5), the bottom surface of base (1) rotates and installs walking wheel (26), fixed mounting has first gear (6) on the output shaft of driving motor (5), two sets of slide rails (30) have been seted up at the top of mount (3), the inboard top of mount (3) is rotated and is installed first dwang (10) and second dwang (11), the one end of first dwang (10) extends to the below of base (1) and fixed mounting has first rotatory cleaning brush (12), the one end of second dwang (11) extends to the below of base (1) and fixed mounting has second rotatory cleaning brush (13), the outer wall fixed mounting of first dwang (10) has second gear (7), the outer wall fixed mounting of second dwang (11) has third gear (8), all the cover is equipped with chain (9) on first gear (6), second gear (7) and third gear (8), one side external fixed surface of box (2) installs first fixed plate (17), the inside fixed mounting of box (2) has fixed plate (4), the inboard bottom fixed mounting of box (2) has air exhauster (15), the bottom external fixed surface of air exhauster (15) installs dust absorption pipe (14) and extends to the below of base (1), air exhauster (15) communicate with each other with the inside of dust absorption pipe (14), the play dirt end fixed mounting of air exhauster (15) has a dirt pipe (16), the bottom of U-shaped dust collection case (18) is rotated and is installed gyro wheel (29), gyro wheel (29) slide and set up in slide rail (30), the top external fixed surface of fixed plate (4) installs water tank (20), one side of water tank (20) surface fixed mounting has inlet tube (22) and water tank (20) inside to communicate with each other, the inboard bottom fixed mounting of water tank (20) has water pump (21), the outlet end fixed mounting of water pump (21) has outlet pipe (23), outlet pipe (23) run through one side surface fixed connection of water tank (20) and box (2) and sleeve pipe (24), outlet pipe (23) communicate with each other with the inside of sleeve pipe (24), the one end fixed mounting of sleeve pipe (24) has gondola water faucet ware (25) and the inside of sleeve pipe (24) to communicate with each other.
2. The dust suction device for building construction according to claim 1, wherein: the number of walking wheel (26) and gyro wheel (29) is four groups and is the rectangle distribution, it has the buckle to articulate on walking wheel (26).
3. The dust suction device for building construction according to claim 1, wherein: the middle part of the top of the fixed frame (3) is provided with a groove, and one end of the drawing rod (19) penetrates through the first fixed plate (17) and the U-shaped dust collection box (18) and is clamped and installed with the groove on the fixed frame (3).
4. The dust suction device for building construction according to claim 1, wherein: an opening is formed in the outer surface of one side of the U-shaped dust collection box (18), the diameter of the opening is larger than that of the dust outlet pipe (16), the dust outlet pipe (16) penetrates through the box body (2) and is movably sleeved with the opening in the U-shaped dust collection box (18), and the dust outlet pipe (16) is communicated with the inside of the U-shaped dust collection box (18).
5. The dust suction device for building construction according to claim 1, wherein: the outer surface of one side of the box body (2) is fixedly provided with a handrail (28), and one side of the box body (2) far away from the shower device (25) is fixedly provided with two groups of handles (27).
6. The dust suction device for building construction according to claim 1, wherein: the outer wall of the front end of the U-shaped dust collection box (18) is embedded with a glass window, and the outer wall of the front end of the U-shaped dust collection box (18) is also fixedly provided with a handle.
7. The dust suction device for building construction according to claim 1, wherein: a knob cover is installed at one end of the water inlet pipe (22) in a threaded mode, and a valve is installed on the sleeve (24).
8. The dust suction device for building construction according to claim 1, wherein: driving motor (5), first gear (6), second gear (7), third gear (8) and chain (9) cooperation are used, drive first dwang (10), second dwang (11) and rotate to drive first rotatory cleaning brush (12) and the rotatory cleaning brush (13) of second and rotate, dust absorption pipe (14), air exhauster (15), play dirt pipe (16) and U-shaped dust collection box (18) cooperation are used, water tank (20), water pump (21) and gondola water faucet ware (25) cooperation are used, handrail (28), handle (27) and walking wheel (26) cooperation are used.
9. The dust suction device for building construction as claimed in claim 7, wherein: the knob cover can be disassembled and assembled through a rotatable knob, water enters the water tank (20) through the water inlet pipe (22) after the disassembly, and the water inlet pipe (22) is closed after the assembly.
10. The working method of the dust suction device for building construction according to claim 1 comprises the following steps: the device is pushed to a place needing dust removal by holding a handrail (28), a knob cover on a water inlet pipe (22) is unscrewed, water is injected into a water tank (20), after a certain amount of water is filled, the knob cover on the water inlet pipe (22) is screwed down, a driving motor (5) and an exhaust fan (15) are controlled to be started, a first gear (6) is driven to rotate, a first rotating rod (10) and a second rotating rod (11) on a second gear (7) and a third gear (8) are driven to rotate, so that a first rotating cleaning brush (12) and a second rotating cleaning brush (13) are driven to rotate, dust on the ground is cleaned and accumulated, meanwhile, the dust cleaned and accumulated on a construction site is discharged into a U-shaped dust collecting tank (18) through a dust outlet pipe (16) through a dust outlet pipe (14), a valve on a water outlet pipe (23) is opened, a water pump (21) is controlled to be started, and water is enabled to be gushed out from the water outlet, enters the shower head (25) and is sprayed out through the shower head (25) to spray the ground after cleaning and dust collection, the device is pulled to each place needing dust collection by holding the handle (27), and after the dust collection is finished, the driving motor (5), the exhaust fan (15) and the water pump (21) are controlled to stop running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852706.3A CN110552307A (en) | 2019-09-10 | 2019-09-10 | Dust collection device for building construction and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852706.3A CN110552307A (en) | 2019-09-10 | 2019-09-10 | Dust collection device for building construction and working method thereof |
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| Publication Number | Publication Date |
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| CN110552307A true CN110552307A (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910852706.3A Pending CN110552307A (en) | 2019-09-10 | 2019-09-10 | Dust collection device for building construction and working method thereof |
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| CN (1) | CN110552307A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111794158A (en) * | 2020-06-10 | 2020-10-20 | 高建锐 | Ground dust collector that construction used |
| CN112478513A (en) * | 2020-12-04 | 2021-03-12 | 重庆工商大学 | Special garbage recycling device for urban and rural planning and landscaping |
| CN112704991A (en) * | 2020-11-27 | 2021-04-27 | 彭权鑫 | Green building construction device |
| CN113082900A (en) * | 2021-02-24 | 2021-07-09 | 付红 | Rotatory dust fall mechanism and raise dust treatment facility for construction |
| CN113338207A (en) * | 2021-07-14 | 2021-09-03 | 安徽森通建设工程有限公司 | Building engineering keeps away dirt device with high-efficient dust absorption |
| CN114164786A (en) * | 2021-10-22 | 2022-03-11 | 长安大学 | Intelligent environment-friendly dust removal device for building construction site |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794158A (en) * | 2020-06-10 | 2020-10-20 | 高建锐 | Ground dust collector that construction used |
| CN112704991A (en) * | 2020-11-27 | 2021-04-27 | 彭权鑫 | Green building construction device |
| CN112478513A (en) * | 2020-12-04 | 2021-03-12 | 重庆工商大学 | Special garbage recycling device for urban and rural planning and landscaping |
| CN112478513B (en) * | 2020-12-04 | 2022-08-02 | 重庆工商大学 | Special garbage recycling device for urban and rural planning and landscaping |
| CN113082900A (en) * | 2021-02-24 | 2021-07-09 | 付红 | Rotatory dust fall mechanism and raise dust treatment facility for construction |
| CN113338207A (en) * | 2021-07-14 | 2021-09-03 | 安徽森通建设工程有限公司 | Building engineering keeps away dirt device with high-efficient dust absorption |
| CN114164786A (en) * | 2021-10-22 | 2022-03-11 | 长安大学 | Intelligent environment-friendly dust removal device for building construction site |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |